Tag: coordination in life processes
Questions Related to coordination in life processes
What is common among amylase, rennin and trypsin?
-
These are produced in stomach
-
These act at a pH lower than $7$
-
These all are proteins
-
These all are proteolytic enzymes
Amylase, rennin and trypsin are protein enzymes.
Pancreatic amylase acts on?
-
Starch
-
Protein
-
Lipid
-
Disaccharide
Lipase acts on ________________.
-
Proteins
-
Fats
-
Carbohydrates
-
Aminoacids
The major site of protein breakdown to form free amino acids, is in the
-
Kidney
-
Spleen
-
Intestine
-
Bone-marrow
Pancreatic juice contains pancreatic amylase, lipase and trypsin, trypsin converts polypeptides into the dipeptides in the first part of small intestine i.e., duodenum. The succus entricus in the third part of small intestine i.e., ileum converts dipeptides into the amino acids which are absorbed by the wall of the intestine. Thus, the correct answer is option C.
Proteins are broken down into amino acids completely in
-
Buccal cavity
-
Stomach
-
Intestine
-
Rectum
- Once a protein source reaches your stomach, hydrochloric acid, and enzymes called proteases to break it down into smaller chains of amino acids.
- Amino acids are joined together by peptides, which are broken by proteases.
- Digestion of protein is completed in the small intestine by the pancreatic enzymes trypsin, chymotrypsin, and carboxypeptidase. Hence, Proteins are broken down into amino acids completely in Intestine.
The three secretions meeting the food in small intestine are
-
Bile juice, pancreatic juice and intestinal juice
-
Pancreatic, intestinal and gastric juice
-
Bile, pancreatic and gastric juice
-
Bile, gastric juice and saliva
Various types of movements are generated by the muscularis layer of the small intestine. These movements help in a thorough mixing up of the food with various secretions in the intestine and thereby facilitate digestion. The bile, pancreatic juice and the intestinal juice are the secretions released into the small intestine. Pancreatic juice and bile are released through the hepato-pancreatic duct. The intestinal mucosal epithelium has goblet cells, which secrete mucus. The secretions of the brush border cells of the mucosa along with the secretions of the goblet cells constitute the intestinal juice or succus entericus.
Digestion of carbohydrates, proteins and fats completes in
-
Stomach
-
Liver
-
Small intestine
-
Large intestine
Small intestine has three parts - duodenum, jejunum and ileum. When food leaves the stomach through its pyloric end and enters the duodenum it is called chyme (acidic). The digestion of macro molecules ingested is completed in small intestine. The digested products are absorbed in the small intestine and comes to the blood.
Maximum digestion of food takes place in
-
Stomach
-
Jejunum
-
Colon
-
Duodenum
- Small intestine has three parts - duodenum, jejunum, and ileum.
- The maximum digestion of food takes place in the duodenum. While the digestion of food is completed in jejunum.
- The maximum absorption of food takes place in ileum.
End products of protein hydrolysis are
-
Mixture of amino acids
-
Sugars
-
Peptides
-
25 amino acids
Proteins are biopolymers made up of by joining together of amino acids with the help of peptide bonds. When proteins are acted upon by digestive proteolytic enzymes in the gut the peptide bonds are hydrolyzed and a mixture of amino acids is obtained.
Which one of the following pairs of the cells with their secretion is correctly matched?
-
Oxyntic cells- A secretion with pH between 2.0 and 3.0
-
Alpha cells of Islets of Langerhans- Secretion that decreases blood sugar level
-
Kupffer cells- A digestive enzyme that hydrolysis nucleic acids
-
Sebaceous glands- A digestive enzyme that hydrolysis nucleic acids
Oxyntic cells or parietal cells, are the stomach epithelium cells that secrete gastric acid intrinsic factor. These cells secrete hydrochloric acid (HCl), which makes the gastric juice acidic (pH =2 -3).